(Japanese: 氷の地下道Icy Underpass) is a playable dungeon the player goes through in Pokémon Mystery Dungeon: Magnagate and the Infinite Labyrinth. It has nine floors and no boss. This dungeon is accessible immediately after finishing the Big Glacier dungeon and entering another Magnagate portal. Recruited Pokémon automatically get sent back to Pokémon Paradise instead of staying with the group.